Bhai is function ko block karny k le use hota hy .kabi kabi ap ny deka hoga breaker close command block hota hy ya pir interlock magr hum pir close karty hy bar bar.ya pir ap nay phy breaker off kiya pir on kiya magar ap ke saty ko pata nahi wo be akar close karta hy .
@@electricaltech4u45 ye wrong answer hai Bhai ji Jo usne mujhe bola tha ki under faulty condition ( TNC khraab ho gya ho ) mai closing coil ko supply jata hai to anti pumping relay pick ho jaayegi aur dobara closing ki command closing tak pahunchegi hi nahi